With Provocative Moves, U.S. Dangers Unraveling Gains With China

Analysts have pointed to a widespread confusion over the United States’ approach to North Korea, among other issues.
But his efforts to prod the Chinese on North Korea have, by his own account, failed.
Under Mr. Trump, he said, there was even less room for cooperation than under his predecessor, Barack Obama, who sought to work with China on climate change, for example.
“While I greatly appreciate the efforts of President Xi & China to help with North Korea, it has not worked out,” the president wrote on Twitter more than a week ago.
Although an outright breach in relations remains unthinkable, given the depth of economic ties, the outward warmth Mr. Trump once showed Mr. Xi seems to have worn out its welcome in China.